ST3222E ±15KV ESD-PROTECTED, 3 TO 5.5V, LOW POWER, UP TO 250KBPS, RS-232 DRIVERS AND RECEIVERS ■ ■ ■ ■ ■ ■ ESD PROTECTIO FOR RS-232 I/O PINS ±15KV HUMAN BODY MODEL ±8KV IEC 1000-4-2 CONTACT DISCHARGE 300µA SUPPLY CURRENT 250Kbps MINIMUM GUARENTEED DATA RATE 6V/µs MINIMUM GUARANTEED SLEW RATE MEET EIA/TIA-232 SPECIFICATIONS DOWN TO 3V AVAILABLE IN SO-18, SSOP20 AND TSSOP20 DESCRIPTION The ST3222E is a 3V powered EIA/TIA-232 and V.28/V.24 communications interface with low power requirements, high data-rate capabilities and enhanced electrostatic discharge (ESD) protection to ±8kV using IEC1000-4-2 Contact Discharge and ±15kV using the Human Body Model. ST3222E has a proprietary low dropout transmitter output stage providing true RS-232 performance from 3 to 5V supplies with a dual charge pump. The charge pump requires only four small 0.1mF external capacitors for operation form 3V supply. The device has two receivers and two drivers. The ST3222E features a 1µA shutdown mode that reduces power consumption and extends battery life in portable systems. Its receivers can remain active in shutdown mode, allowing external SOP SSOP TSSOP devices such as modems to be monitored using only 1µA supply current. The device is guaranteed to run at data rates of 250Kbps while maintaining RS-232 output levels. Typical applications are Notebook, Subnotebook and Palmtop Computers, Battery Powered Equipment, Hand-Held Equipment, Peripherals and Printers. ORDERING CODES Type Temperature Range Package Comments ST3222ECD ST3222EBD ST3222ECDR ST3222EBDR ST3222ECPR ST3222EBPR ST3222ECTR ST3222EBTR 0 to 70 °C -40 to 85 °C 0 to 70 °C -40 to 85 °C 0 to 70 °C -40 to 85 °C 0 to 70 °C -40 to 85 °C SO-18 (Tube) SO-18 (Tube) SO-18 (Tape & Reel) SO-18 (Tape & Reel) SSOP20 (Tape & Reel) SSOP20 (Tape & Reel) TSSOP20 (Tape & Reel) TSSOP20 (Tape & Reel) 50parts per tube / 20tube per box 50parts per tube / 20tube per box 1000 parts per reel 1000 parts per reel 1350 parts per reel 1350 parts per reel 2500 parts per reel 2500 parts per reel March 2003 1/10 ST3222E PIN CONFIGURATION SO-18 SSOP20/TSSOP20 PIN DESCRIPTION 2/10 PlN N° (SO-18) PlN N° (SSOP20 TSSP20) SYMBOL NAME AND FUNCTION 1 1 EN 2 2 C1+ 3 3 V+ 4 4 C1- 5 5 C2+ 6 6 C2- 7 7 VT2OUT Receiver Enable Control. Drive low for normal operation. Drive high to force the receivers outputs (R_OUT) into a high-impedance state. Positive Terminal for the first Charge Pump Capacitor 5.5V Generated By The Charge Pump. Negative Terminal for the first Charge Pump Capacitor Positive Terminal for the second Charge Pump Capacitor Negative Terminal for the second Charge Pump Capacitor -5.5V Generated By The Charge Pump. Second Transmitter Output Voltage 8 8 9 9 R2IN 10 10 R2OUT Second Receiver Output Voltage 11 11 12 NC T2IN Not Connected Second Transmitter Input Voltage 12 13 T1IN First Transmitter Input Voltage 14 NC R1OUT Not Connected First Receiver Output Voltage 13 15 14 16 R1IN 15 17 T1OUT 16 18 17 19 GND VCC 18 20 SHDN Second Receiver Input Voltage First Receiver Input Voltage First Transmitter Output Voltage Ground Supply Voltage Active Low Shutdown Control Input. Drive Low To Shut-down Transmittes And Charge Pump ST3222E ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VCC Supply Voltage -0.3 to 6 V V+ Doubled Voltage Terminal (VCC - 0.3) to 7 V VV+ +|V-| TIN Inverted Voltage Terminal 0.3 to -7 13 V V Transmitter Input Voltage Range -0.3 to 6 V SHDN RIN Transmitter Input Voltage Range Receiver Input Voltage Range -0.3 to 6 V TOUT Transmitter Output Voltage Range ROUT Receiver Output Voltage Range tSHORT ± 25 V ± 13.2 V -0.3 to (VCC + 0.3) V Transmitter Output Short to GND Time Continuous Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. V+ and V- can have a maximum magnitude of +7V, but their absolute addition can not exceed 13 V. SHUTDOWN AND ENABLE CONTROL TRUTH TABLE SHDN EN T-OUT R-OUT 0 0 1 1 0 1 0 1 High Z High Z Active Active Active High Z Active High Z ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS Symbol ESD ESD Parameter ESD Protection Voltage ESD Protection Voltage Test Conditions Human Body Model IEC-1000-4-2 Min. Typ. Max. ±15 ±8 Unit kV kV ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol Parameter ISUPPLY VCC Power Supply Current ISHDN SHUTDOWN Supply Current Typ. Max. Unit No Load Test Conditions SHDN=VCCTA = 25°C Min. 0.3 1 mA No Load SHDN=VCCTA = 25°C 1 10 µA Typ. Max. Unit 0.8 V LOGIC INPUT ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol Parameter Test Conditions VIL Input Logic Threshold Low T-IN, EN, SHDN (Note 1) VIH Input Logic Threshold High VCC = 3.3V VCC = 5V VHYS IIL Transmitter Input Histeresys Input Leakage Current Min. 2 V 2.4 0.25 T-IN, EN, SHDN ± 0.01 V ±1 µA Note 1: Transmitter input hysteresis is typically 250mV 3/10 ST3222E TRANSMITTER ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1µF VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol Parameter VTOUT Output Voltage Swing RTOUT ITSC Transmitter Output Resistance Output Short Circuit Current ITOL Output Leakage Current Test Conditions All Transmitter outputs are loaded with 3KΩ to GND VCC = V+ = V- = 0V VOUT = ± 2V VCC = 0V or 3V to 3.6V Transmitters Disable Min. Typ. ±5 ± 5.4 V 300 10M Ω ± 60 mA VOUT = ± 12V Max. Unit ± 25 µA Typ. Max. Unit ± 0.05 ± 10 µA 25 V RECEIVER ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1µF VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol IOL VRIN VRIL VRIH Parameter Output Leakage Current Receiver Input Voltage Operating Range Input Threshold Low Input Threshold High Test Conditions Min. R-OUT, EN = VCC, Receiver Disabled -25 TA = 25°C VCC = 3.3V 0.6 1.2 TA = 25°C VCC = 5V 0.8 1.5 TA = 25°C VCC = 3.3V 1.5 2.4 TA = 25°C VCC = 5V 1.8 2.4 VRIHYS Input Hysteresis V 0.5 RRIN Input Resistance TA = 25°C 3 VROL Output Voltage Low IOUT = 1.6mA VROH Output Voltage High IOUT = -1mA 5 V V 7 0.4 VCC-0.6 VCC-0.1 KΩ V V TIMING CHARACTERISTICS (C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol DR Parameter Data Transfer Rate tPHLR tPLHR Propagation Delay Input to Output |tPHLT - tTHL| Transmitter Propagation Delay Difference tOER tODR |tPHLR - tTHR| SRT Test Conditions RL = 3KΩ CL2= 1000pF one trasmitter switching RXIN to RXOUT CL = 150pF Receiver Output Enable Normal Operation Time Receiver Output Disable Normal Operation Time Receiver Propagation Delay Difference Trnasition Slew Rate TA = 25°C RL = 3KΩ to 7KΩ VCC = 3.3V measured from +3V to -3V or -3V to +3V CL = 150pF to 1000pF CL = 150pF to 2500pF Typ. Max. 250 (Note 1) (Note 1) Transmitter Skew is measured at the transmitter zero cross points 4/10 Min. 6 4 Unit Kbps 0.15 µs 200 ns 50 ns 50 ns 50 ns 30 30 V/µs V/µs ST3222E APPLICATION CIRCUITS CAPACITANCE VALUE (µF) VCC C1 C2 C3 C4 Cbypass 3.0 to 3.6 4.5 to 5.5 3.0 to 5.5 0.1 0.047 0.1 0.1 0.33 0.47 0.1 0.33 0.47 0.1 0.33 0.47 0.1 0.1 0.1 5/10 ST3222E TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified Tj = 25°C) Figure 1 : Output Current vs Output High Voltage Figure 4 : Output Current vs Output Low Voltage Figure 2 : Output Current vs Output High Voltage Figure 5 : Voltage Transfer Characteristics for Trasmitter Inputs Figure 3 : Output Current vs Output Low Voltage Figure 6 : Receiver Input Resistance 6/10 ST3222E SO-18 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. MIN. TYP. MAX. A 2.35 2.65 0.092 0.104 A1 0.1 0.3 0.004 0.012 A2 2.55 0.100 B 0.33 0.51 0.013 0.020 C 0.23 0.32 0.009 0.012 D 11.35 11.75 0.447 0.462 E 7.4 7.6 0.291 0.299 e 1.27 0.050 H 10.00 10.65 0.393 0.419 h 0.25 0.75 0.010 0.029 0.016 0.050 k 8 L ˚ (max.) 0.4 1.27 B A A2 h x 45û K e A1 L 0.10mm C H .004 Seating Plane D 10 E 18 1 9 SO18 0070768 7/10 ST3222E SSOP20 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. A MIN. TYP. MAX. 2 A1 0.05 A2 1.65 b 0.079 0.002 1.75 1.85 0.065 0.22 0.38 0.009 0.015 c 0.09 0.25 0.004 0.010 D 6.9 7.2 7.5 0.272 0.283 0.295 E 7.4 7.8 8.2 0.291 0.307 0.323 E1 5 5.3 5.6 0.197 0.209 0.220 e 0.069 0.65 BSC 0.073 0.0256 BSC K 0˚ 4˚ 8˚ 0˚ 4˚ 8˚ L 0.55 0.75 0.95 0.022 0.030 0.037 A A2 A1 b K e L E c D E1 PIN 1 IDENTIFICATION 1 0061436C 8/10 ST3222E TSSOP20 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. A MIN. TYP. MAX. 1.2 A1 0.05 A2 0.8 b 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0079 D 6.4 6.5 6.6 0.252 0.256 0.260 E 6.2 6.4 6.6 0.244 0.252 0.260 E1 4.3 4.4 4.48 0.169 0.173 0.176 1 e 0.65 BSC K 0˚ L 0.45 A 0.0256 BSC 0.60 8˚ 0˚ 0.75 0.018 8˚ 0.024 0.030 A2 A1 b K e L E c D E1 PIN 1 IDENTIFICATION 1 0087225C 9/10 ST3222E Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. © The ST logo is a registered trademark of STMicroelectronics © 2003 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. © http://www.st.com 10/10